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Collections are a way for you to organize kata so that you can create your own training routines. Every collection you create is public and automatically sharable with other warriors. After you have added a few kata to a collection you and others can train on the kata contained within the collection.
Get started now by creating a new collection.
Is it more efficient removing the duplicates this way or is it better with a set
principle of inclusion-exclusion to avoid double counting. very nice
my code is similar to yours but i use set to remove the duplicates
can someone help me to know, how this logic work. i mean i know this solution is correct but how this logic execute like to understand. Experts please help me to understand
"How to think like a mathematician"